Apollo 11 Mission Patch
"Michael Collins, the astronaut who remained in orbit around the Moon as Armstrong and Aldrin walked on the moon, designed that patch. The eagle represents the United States of America. It is carrying an olive branch, a symbol of peace, because Apollo 11 was a peaceful mission. Humans may use their presence in space for war, but that wasn't what Apollo 11 was about. Apollo 11 was supposed to be a mission into space, to the Moon, for peaceful purposes.
"The Apollo 11 patch could have included the names of the astronauts that went to the moon: Armstrong, Aldrin, and Collins. But it didn't. The insignia was meant to represent ALL the people who had worked towards putting a man on the moon.
"...two things: the eagle represents the US, and the olive branch represents a peaceful voyage. ...the patch represented everyone who worked to make the Apollo 11 mission happen."
Read about Collins' design in his own words at:
Source: Gary, date unknown, retrieved 12/18/13 from http://answers.yahoo.com/question/index?qid=20100524194511AAWM1Wf